Material or article handling – Horizontally swinging load support – Swinging about pivot
Patent
1988-10-17
1991-10-22
Spar, Robert J.
Material or article handling
Horizontally swinging load support
Swinging about pivot
414750, 414753, 901 17, 901 22, 901 23, B25J 1804
Patent
active
050590898
ABSTRACT:
A multi-cylinder and short lead screw driven travel arm or machinery movement unit achieving infinitely variable travel through the design limits of travel imposed thereon. In one working configuration using 1", 2", 4" and 8" travel pneumatic cylinders and a 1" travel screw together yield a sixteen inch travel range with an infinite range of fully programmable settings through selected activation of cylinders along with the selected vernier setting of the 1" threaded travel screw. The travel range of settings may be increased even further by adding additional travel cylinders and increased length travel guide structure adequate for such increased travel range of settings, for example, addition of a 5" travel cylinder extends the range of settings to a maximum of twenty one inches.
REFERENCES:
patent: 3840128 (1974-10-01), Swoboda et al.
patent: 3888360 (1975-06-01), Ando et al.
patent: 4379335 (1983-04-01), Kirsch et al.
patent: 4489624 (1984-12-01), Schaib et al.
patent: 4526654 (1985-07-01), Johansson et al.
patent: 4543638 (1985-09-01), Scarffe
patent: 4616745 (1986-10-01), Hartness
patent: 4662813 (1987-05-01), Hartman
Kintzinger Warren H.
Spar Robert J.
Underwood Donald W.
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